U.S. Geological Survey Geologist, Alexander Gray Alex Gray examines buried sediments at Butler Cave in Virginia.
Winter 2026 Photo Contest Winner: William Odom, Honorable Mention
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I am a Research Geologist at the Florence Bascom Geoscience Center. My work uses cosmogenic nuclide geochronology and AI-based mapping techniques to address geologic, tectonic, and geomorphologic questions.
I joined the USGS in 2020, when I began working with the Appalachian Basin Geologic Mapping Project and the Bascom 40Ar/39Ar Dating (BARD) Lab to map and date geologic materials in the Appalachian Mountains. Since 2021, I have been developing new approaches to generate surficial material and landform maps using convolutional neural networks applied to high-resolution lidar and other remotely sensed data. This work began in the Catskill Mountains of New York and has expanded to numerous landscapes around the country in need of rapidly generated surficial maps. Most recently, I have been using AI-based mapping techniques to locate and characterize relict manganese oxide ore mines for the Appalachian Manganese Oxide Research Effort (AMORE).
In 2021, I established the Reston Cosmogenic Nuclide (RECON) Lab, a facility dedicated to the preparation of cosmogenic 26Al and 10Be for measurement via accelerator mass spectrometry. I am leading exposure and burial dating efforts for collaborative projects in the Appalachian and Rocky Mountains, in addition to consulting on various smaller-scale studies. Each of these projects is using cosmogenic nuclide geochronology to better constrain histories of paleoseismicity, river incision, and tectonic activity.
In my current role, I am working to expand the use of AI-based mapping techniques and cosmogenic nuclides in USGS mapping and research projects.
Research Geologist (2023-present), U.S. Geological Survey
Geologist (2020-2023), U.S. Geological Survey
Graduate Intern (2019), U.S. Geological Survey
Research Assistant (2015-2020), Purdue University
Teaching Assistant (2015-2016), Purdue University
Technician (2013-2014), UNC Chapel Hill Isotope Geochemistry & Geochronology Laboratory
Technician (2011-2012), UNC Chapel Hill Wave Propagation Laboratory
PhD in Geology - Purdue University (2020)
BS in Geology - University of North Carolina at Chapel Hill (2014)
American Geophysical Union
Geochemical Society
Geological Society of America
Geological Society of Washington
U.S. Geological Survey Geologist, Alexander Gray Alex Gray examines buried sediments at Butler Cave in Virginia.
Winter 2026 Photo Contest Winner: William Odom, Honorable Mention
U.S. Geological Survey Geologist, Alexander Gray Alex Gray examines buried sediments at Butler Cave in Virginia.
Winter 2026 Photo Contest Winner: William Odom, Honorable Mention
**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.
U.S. Geological Survey Geologist, Alexander Gray Alex Gray examines buried sediments at Butler Cave in Virginia.
Winter 2026 Photo Contest Winner: William Odom, Honorable Mention
U.S. Geological Survey Geologist, Alexander Gray Alex Gray examines buried sediments at Butler Cave in Virginia.
Winter 2026 Photo Contest Winner: William Odom, Honorable Mention
**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.
*Disclaimer: Listing outside positions with professional scientific organizations on this Staff Profile are for informational purposes only and do not constitute an endorsement of those professional scientific organizations or their activities by the USGS, Department of the Interior, or U.S. Government